function testSk()
 query=u_rot(randomMat());
 disp(query);
 file_id=fopen("test.txt","w");
 for i=1:120
  ret=SK(query,1);
  s=ret.view;
  d=distance(ret.mat,query);
  fprintf(file_id,"%s %f\n",s,d);
 endfor
 fclose(file_id);
endfunction
